practice a little every day, paws crossed ♡
Software Engineer Interview Questions
Practice 9403 coding, system design and machine learning questions from 546 companies, sorted by role, topic and interview round. Every question has step-by-step hints, a code runner that supports 8 languages and an AI mentor; members also get the full solution walkthrough.
- 9403
- Questions
- 546
- Companies
- 11
- Topics
- 8
- Languages
Showing 1981–2010 of 2336 results
- SalesforceMediumSoftware EngineerGoing Above and Beyond: Helping Others and Exceeding What Was Expected
Two behavioral prompts on going above and beyond: helping a colleague or team beyond what your role required, and delivering more than was expected on your own work. It assesses initiative, judgment about cost and scope, and impact that lasts beyond the single situation.
Behavioral & LeadershipOnsite - SalesforceMediumSoftware EngineerHelp a Colleague Resolve a Difficult Problem
Describe a specific time you helped a colleague solve a difficult problem while preserving their ownership. Show how you understood the need, contributed respectfully, and created a lasting benefit for the colleague or team.
Behavioral & LeadershipOnsite - SalesforceMediumSoftware EngineerHiring Manager Round: Current Work, Motivation for Salesforce and Keeping Up with AI
A hiring-manager conversation covering your current role and the progress on your current project, why you want to leave your company and join Salesforce, and how you keep up with AI developments. It assesses scope and impact, researched motivation and practical judgment about AI tools.
Behavioral & LeadershipOnsite - SalesforceHardSoftware EngineerImplement an LFU cache
This question evaluates understanding of data structures and cache eviction policies, specifically frequency tracking for LFU caches and LRU tie-breaking among equal-frequency items.
Coding & AlgorithmsOnsite - SalesforceMediumSoftware EngineerImplement an LFU cache with O(1) operations
This problem tests your ability to maintain multiple layers of linked data structures to achieve O(1) time complexity for both access and eviction in an LFU (Least Frequently Used) cache.
Coding & AlgorithmsOnsiteData StructuresHash MapDoubly Linked List - SalesforceMediumSoftware EngineerImplement common data-structure and JS tasks
This problem tests your ability to design a time-aware data structure, manipulate linked structures, and demonstrate mastery over JavaScript's asynchronous execution model and functional programming patterns.
Coding & AlgorithmsOnsiteData StructuresLinked ListsJavaScript - SalesforceMediumSoftware EngineerMinimize operations to reduce integer to zero
This problem tests your ability to optimize mathematical transformations on an integer using greedy strategies or dynamic programming by analyzing the parity and binary representation of the input.
Coding & AlgorithmsOnsiteGreedyBit ManipulationRecursion - SalesforceMediumSoftware EngineerMinimum Sum of Weekly Maximum Costs
Partition an array of daily costs into k contiguous weeks to minimize the sum of each week's maximum cost using dynamic programming.
Coding & AlgorithmsOnsiteDynamic ProgrammingArrayMonotonic Stack - SalesforceMediumSoftware EngineerValidate a Generalized Word Abbreviation
Validate whether a lowercase word matches a generalized abbreviation whose positive numbers skip characters. Enforce exact letter matching, full consumption, multi-digit counts, and the prohibition on leading zeroes.
Coding & AlgorithmsOnsite - SalesforceMediumSoftware EngineerWalk Through the Architecture of the Project You Work on Now
A design-round prompt asking you to walk through the architecture of the project you currently work on: its purpose, components, request and data flows, technology choices, scale and failure handling, and your own part in it. It assesses clarity, ownership and depth under probing.
System DesignOnsite - Salient AiHardSoftware EngineerFind Duplicate Files by Content with Efficient I/O
Find content-identical files with size filters, streaming digests, exact collision checks, bounded I/O, and explicit handling of changing or unreadable files.
Software Engineering FundamentalsOnsite - Scale AIEasySoftware EngineerAnswer common project leadership questions
This question evaluates ownership, self-awareness, communication, prioritization, and growth mindset through prompts about proud projects, responses to feedback, time-pressured work, side projects, and personal strengths and weaknesses.
Behavioral & LeadershipOnsite - Scale AIMediumSoftware EngineerCompute party time blocks per neighborhood
This question evaluates a candidate's ability to perform interval merging and temporal aggregation across joined datasets, testing algorithmic efficiency, data-processing skills, and handling of sorting and grouping in the Coding & Algorithms domain.
Coding & AlgorithmsOnsite - Scale AIMediumSoftware EngineerDebug a Project Assignment Codebase
Tests your ability to manage state, enforce filtering rules, and maintain clean public API contracts in an asynchronous or stateful task assignment system.
Software Engineering FundamentalsOnsiteSystem DesignData StructuresState Management - Scale AIMediumSoftware EngineerDesign CSV upload endpoint with GPT classification
Implement a backend processing pipeline that parses an uploaded CSV file, enriches each text record via an external classification client, and persists structured results to a local JSON store.
Software Engineering FundamentalsOnsitePythonAPI DesignData Parsing - Scale AIEasySoftware EngineerDesign an LLM API pipeline
This question evaluates competency in integrating hosted LLMs into user-facing applications, including API request design, prompt engineering for structured output, output validation, latency and failure handling, and production readiness.
ML System DesignOnsite - Scale AIMediumSoftware EngineerDesign pipeline using classification and embedding services
This question evaluates a candidate's proficiency in ML system design, covering API design, service orchestration, data storage modeling, scalability strategies, and reliability/observability when integrating black-box classification and embedding services.
ML System DesignOnsite - Scale AIEasySoftware EngineerPresent a Metrics-Driven Technical Project
Tests your ability to present a past technical initiative clearly to peers, articulating technical architecture, quantifiable metrics, personal ownership, and real-world tradeoffs.
Behavioral & LeadershipOnsitebehavioralsystem architectureproject deep-dive - ScribdMediumSoftware EngineerBehavioral: Reason for Leaving, Proudest Project, Handling Ambiguity, and a Trade-off
This set of behavioral prompts evaluates a candidate's self-awareness, project ownership, adaptability under uncertainty, and technical pragmatism.
Behavioral & LeadershipOnsiteBehavioralLeadershipCommunication - ScribdMediumSoftware EngineerMany-to-Many Schema Design With a Join Table, Composite Primary Key, and Queries
Design a relational schema modeling a many-to-many relationship between documents and tags using a join table with a composite primary key, index both lookup directions, and write queries handling outer joins and relational division.
Data Manipulation (SQL/Python)OnsiteSQLDatabase DesignPostgreSQL - ScribdMediumSoftware EngineerMost Popular Actors Query When Object IDs Mix Movies and People With Multiple Roles
A data query question about ranking the most popular actors when an object ID can refer to either a movie or a person, and one person can hold several roles in the same movie. It tests clarifying the popularity metric, filtering to actor credits, deduplicating person and movie pairs, checking object types, and defining a tie policy.
Data Manipulation (SQL/Python)Onsite - ScribdMediumSoftware EngineerProduct Event Tracking and Analytics Pipeline With Flexible Schema and Retention
This question tests the architectural design of a scalable event-tracking pipeline capable of handling heterogeneous JSON schemas, choosing appropriate storage tiers for analytical queries, and managing data lifecycle policies.
System DesignOnsiteData PipelineSchema DesignStorage - ScribdMediumSoftware EngineerProduction-Ready Event Ingestion Handler: Validation, Idempotent Writes, DLQ, Metrics
Tests your ability to write production-grade ingestion code that enforces strict schema validation, guarantees idempotent persistence, handles retries and Dead-Letter Queue (DLQ) routing, and emits operational metrics.
Software Engineering FundamentalsOnsitedata-pipelinesvalidationsystem-reliability - SheinMediumSoftware EngineerSolve array modulo and parentheses tasks
This question evaluates proficiency in modular arithmetic and subarray-sum reasoning for remainder counting, together with string manipulation and parentheses-balancing competencies, testing algorithmic problem-solving, correctness justification, and implementation skills in the Coding & Algorithms domain.
Coding & AlgorithmsOnsite - ShopifyMediumSoftware EngineerDesign a Product Photography Upload Service
Design a product-photography workflow from shoot creation and direct upload through processing, merchant review, acceptance, and reshoots. Cover scoped upload authorization, authoritative metadata, idempotent state transitions, stale completion events, notifications, retention, and publication safety.
System DesignOnsite - ShopifyHardSoftware EngineerDesign a rare-book lending and returns system
Design a rare-book lending and returns system evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
System DesignOnsite - ShopifyMediumSoftware EngineerEngineering Manager Career Story: Team Impact, Quality Bar and Performance Management
A behavioral round for engineering managers that asks you to tell your management story through concrete examples. It tests the impact you drove through teams, how you kept the engineering quality bar high under pressure, how you handled underperformance, and how you grew people into larger roles.
Behavioral & LeadershipOnsite - ShopifyMediumSoftware EngineerImplement an In-Memory File System
Implement an in-memory file system with absolute and relative path resolution, sorted listing, directory changes, creation, and removal. Enforce deterministic error codes, atomic validation, recursive deletion rules, and protection for the current directory and its ancestors.
Coding & AlgorithmsOnsite - ShopifyMediumSoftware EngineerTechnical Deep Dive: Present a System You Built as a Design Retrospective
A senior engineering interview round in which you present a system you designed or led, using a diagram prepared in advance, and then defend it under questioning. It tests how you frame the problem and your ownership, explain key decisions and their alternatives, discuss failures honestly, and go deep on any component.
System DesignOnsite - SierraMediumSoftware EngineerDesign an LLM-Powered Customer Service Chat System with Robust Failure Handling
A system design interview for a customer-service chat system whose replies come from an external LLM provider. It walks through the end-to-end happy path and publish/subscribe message delivery, then focuses on error handling when the provider partially fails or the network drops, on both the server and the client.
System DesignOnsite
Salesforce
Scale AI
Shopify
Sierra